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MagicSpam 2.0.13 Insecure File Permission

MagicSpam 2.0.13 Insecure File Permission
Posted Jan 12, 2018
Authored by Marco Marsala | Site vulnerability-lab.com

MagicSpam version 2.0.13 suffers from an insecure file permission vulnerability.

tags | exploit
MD5 | 2d78133304b97086937f9b94d1e8ecf4

MagicSpam 2.0.13 Insecure File Permission

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Document Title:
===============
MagicSpam 2.0.13 - Insecure File Permission Vulnerability


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2113


Release Date:
=============
2018-01-12


Vulnerability Laboratory ID (VL-ID):
====================================
2113


Common Vulnerability Scoring System:
====================================
2.8


Vulnerability Class:
====================
Privacy Violation - Information Disclosure


Current Estimated Price:
========================
500a! - 1.000a!


Product & Service Introduction:
===============================
MagicSpam comes fully-integrated with any Plesk 12+ package, blocking spam at the edge before it gets a chance to be filtered.
Thereas no need to change DNS or MX records. And your protection comes ready to go with complete logging, statistics, and custom controls.

(Copy of the Homepage: https://www.plesk.com/extensions/magicspam/ )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a insecure file permission vulnerability in the MagicSpam 2.0.13-1 plesk extension.



Vulnerability Disclosure Timeline:
==================================
2017-01-12: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================
LinuxMagic
Product: MagicSpam - Plesk Extension 2.0.13-1


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Low


Technical Details & Description:
================================
An insecure file permission access vulnerability has been discovered in the MagicSpam 2.0.13-1 plesk extension.
The vulnerability allows an attacker to access sensitive information like emails without permission or authentication.


Plesk panel features the freemium extension MagicSpam providing industry-leading spam protection technologies.
MagicSpam is keeping a detailed log of all e-mail messages processed under directory /var/log/magicspam/ in
Ubuntu installations. A log file is created with the name mslog, with readable permissions for everyone, and rotated daily.
The file will reveal the full list of mailboxes on the server (provided they received or sent at least one message in the past).

The security risk of the permission vulnerability is estimated as low with a common vulnerability scoring system count of 2.8.
Successful exploitation of the file permission security vulnerability results in information disclosure of emails.


Proof of Concept (PoC):
=======================
The insecure file permission vulnerability can be exploited by remote attackers without user account or user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

$ id
uid=1002(marco) gid=1011(marco) groups=1011(marco)
$ cd /var/log/magicspam/
$ ls -l
-rw-r--r-- 1 magicspam root 348937 Jan 10 11:50 mslog
$ tail -n1 mslog
2018-01-10 11:51:26 magicspam-daemon[335]: HAM: mua=no,ip=[93.94.32.17:mail15.clab99a.contactlab.it],helo=<mail15.clab99a.contactlab.it>,from=<564020151.35960.1000117@t.contactlab.it>,rcpt=<info@thenetworksolution.it>


Solution - Fix & Patch:
=======================
The security vulnerability can be resolved byan exclude of the emails in the list of the affected application log files.
Another solution could be to integration an authentication mechanism for the log file of the magic spam web-application.


Security Risk:
==============
The security risk of the insecure file permission vulnerability in the plesk extension magic spam is estimated as medium (CVSS 2.8).


Credits & Authors:
==================
Marco Marsala [marco@thenetworksolution.it] - https://www.vulnerability-lab.com/show.php?user=Marco+Marsala


Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or
implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any
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or consequential damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface
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